After his fans started tweeting about their disbelief that he was working out, the musician joked that him exercising was like an ad campaign for Jack Link’s beef jerky in which campers play pranks on Sasquatch.

“It looked like one of those messin’ with Sasquatch commercials…” he tweeted.

Discussing his new exercise routine wasn’t Shelton’s only Twitter activity of the day, he also changed his cover photo from one of his soon-to-be-former wife’s Marie Claire cover to one of him on stage points out People.

“This is not the future we envisioned,” reps for the two said in a statement.

“And it is with heavy hearts that we move forward separately. We are real people, with real lives, with real families, friends and colleagues. Therefore, we kindly ask for privacy and compassion concerning this very personal matter.”

Blake Shelton and Miranda Lambert get cozy on March 29.

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Shelton and Lambert arrive at the Grammys on Feb. 8.

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The couple walk the carpet at the CMA Awards on Nov. 5, 2014.

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Lambert and Shelton arrive at the BMI Country Awards on Nov. 3, 2014.

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Shelton presents Lambert with the Single Record of the Year award at the ACM Awards on April 6, 2014.

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The couple keeps close at the Grammys on Jan. 26, 2014.

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Lambert and Shelton hug it out at the MusiCares Person of the Year celebration on Jan. 24, 2014.